U.S. patent application number 16/991705 was filed with the patent office on 2020-11-26 for method and device for transmitting harq information, and computer storage medium.
The applicant listed for this patent is GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.. Invention is credited to HAI TANG.
Application Number | 20200374049 16/991705 |
Document ID | / |
Family ID | 1000005058901 |
Filed Date | 2020-11-26 |
United States Patent
Application |
20200374049 |
Kind Code |
A1 |
TANG; HAI |
November 26, 2020 |
METHOD AND DEVICE FOR TRANSMITTING HARQ INFORMATION, AND COMPUTER
STORAGE MEDIUM
Abstract
Disclosed are a method and device for transmitting HARQ
information, and a computer storage medium. The method comprises: a
terminal device determines a first uplink time unit, the first
uplink time unit being a time unit for use by the terminal device
in transmitting first uplink control information, the first uplink
control information comprising first HARQ information, the first
HARD information being at least one piece of HARQ information
corresponding to a first downlink shared channel received by the
terminal device, the first downlink shared channel comprising at
least one downlink shared channel, and the first downlink shared
channel being transmitted in at least one downlink time unit in a
first time period; and the terminal device transmits the first
uplink control information in the first uplink time unit.
Inventors: |
TANG; HAI; (Dongguan,
CN) |
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Applicant: |
Name |
City |
State |
Country |
Type |
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. |
Dongguan |
|
CN |
|
|
Family ID: |
1000005058901 |
Appl. No.: |
16/991705 |
Filed: |
August 12, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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PCT/CN2018/076667 |
Feb 13, 2018 |
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16991705 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04W 72/0446 20130101;
H04L 1/1893 20130101 |
International
Class: |
H04L 1/18 20060101
H04L001/18; H04W 72/04 20060101 H04W072/04 |
Claims
1. A method for transmitting Hybrid Automatic Repeat reQuest (HARQ)
information, comprising: determining, by a terminal device, a first
uplink time unit, the first uplink time unit being used for the
terminal device to transmit first uplink control information, the
first uplink control information comprising first HARQ information,
the first HARQ information comprising at least one piece of HARQ
information corresponding to a first downlink shared channel
received by the terminal device, the first downlink shared channel
comprising at least one downlink shared channel, and the first
downlink shared channel being transmitted through at least one
downlink time unit in a first time duration; and transmitting, by
the terminal device, the first uplink control information in the
first uplink time unit.
2. The method of claim 1, wherein a last downlink time unit in the
first time duration is a first downlink time unit, and a time
interval between the first downlink time unit and the first uplink
time unit is more than or equal to a first value.
3. The method of claim 2, wherein the first value is specified by a
communication system; or, the first value is indicated by a network
device through physical-layer signaling; or, the first value is
configured by the network device through higher-layer
signaling.
4. The method of claim 1, wherein a starting downlink time unit in
the first time duration is a second downlink time unit, and a time
interval between the second downlink time unit and the first uplink
time unit is less than or equal to a second value.
5. The method of claim 4, wherein the second value is specified by
a communication system; or, the second value is indicated by the
network device through physical-layer signaling; or, the second
value is configured by the network device through higher-layer
signaling.
6. The method of claim 1, further comprising: transmitting, by the
terminal device, the first uplink control information in a second
uplink time unit, the second uplink time unit being later than the
first uplink time unit.
7. The method of claim 1, further comprising: determining, by the
terminal device, a third uplink time unit, the third uplink time
unit being used for the terminal device to transmit second uplink
control information, the second uplink control information
comprising second HARQ information, the second HARQ information
comprising at least one piece of HARQ information corresponding to
a second downlink shared channel received by the terminal device,
the second downlink shared channel comprising at least one downlink
shared channel and the second downlink shared channel being
transmitted in at least one downlink time unit in a second time
duration; and transmitting, by the terminal device, the second
uplink control information in the third uplink time unit.
8. The method of claim 1, wherein the first uplink time unit is
determined by the terminal device according to a first indication
transmitted by a network device.
9. The method of claim 7, wherein the second uplink time unit is
determined by the terminal device according to a second indication
transmitted by the network device.
10. A device for transmitting Hybrid Automatic Repeat reQuest
(HARQ) information, comprising: a processor; a memory for storing
instructions executable by the processor; and an input/output
interface, wherein the processor is configured to execute the
instructions to perform the following operations: determining a
first uplink time unit, the first uplink time unit is a used to
transmit first uplink control information, the first uplink control
information comprises first HARQ information, the first HARQ
information comprises at least one piece of HARQ information
corresponding to a first downlink shared channel, the first
downlink shared channel comprises at least one downlink shared
channel, and the first downlink shared channel is transmitted
through at least one downlink time unit in a first time duration;
and transmitting the first uplink control information in the first
uplink time unit via the input/output interface.
11. The device of claim 10, wherein a last downlink time unit in
the first time duration is a first downlink time unit, and a time
interval between the first downlink time unit and the first uplink
time unit is more than or equal to a first value.
12. The device of claim 11, wherein the first value is specified by
a communication system; or, the first value is indicated by a
network device through physical-layer signaling; or, the first
value is configured by the network device through higher-layer
signaling.
13. The device of claim 10, wherein a starting downlink time unit
in the first time duration is a second downlink time unit, and a
time interval between the second downlink time unit and the first
uplink time unit is less than or equal to a second value.
14. The device of claim 13, wherein the second value is specified
by a communication system; or, the second value is indicated by the
network device through physical-layer signaling; or, the second
value is configured by the network device through higher-layer
signaling.
15. The device of claim 10, wherein the processor is further
configured to execute the instructions to transmit the first uplink
control information in a second uplink time unit, the second uplink
time unit is later than the first uplink time unit.
16. The device of claim 10, wherein the processor is further
configured to execute the instructions to determine a third uplink
time unit, the third uplink time unit is used to transmit second
uplink control information, the second uplink control information
comprises second HARQ information, the second HARQ information
comprises at least one piece of HARQ information corresponding to a
second downlink shared channel, the second downlink shared channel
comprises at least one downlink shared channel, and the second
downlink shared channel is transmitted in at least one downlink
time unit in a second time duration; and transmit the second uplink
control information in the third uplink time unit via the
input/output interface.
17. The device of claim 16, wherein the second time duration is
later than the first time duration, and no downlink time unit
exists between the first time duration and the second time
duration.
18. The device of claim 10, wherein the first uplink time unit is
determined by the terminal device according to a first indication
transmitted by a network device.
19. The device of claim 17, wherein the second uplink time unit is
determined by the terminal device according to a second indication
transmitted by the network device.
20. A computer storage medium having computer-executable
instructions stored thereon, the computer-executable instruction
being executed by a processor to implement the following
operations: determining a first uplink time unit, the first uplink
time unit is a used to transmit first uplink control information,
the first uplink control information comprises first HARQ
information, the first HARQ information comprises at least one
piece of HARQ information corresponding to a first downlink shared
channel, the first downlink shared channel comprises at least one
downlink shared channel, and the first downlink shared channel is
transmitted through at least one downlink time unit in a first time
duration; and transmitting the first uplink control information in
the first uplink time unit.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] The present application is a continuation of International
Application No. PCT/CN2018/076667 filed on Feb. 13, 2018, the
disclosure of which is hereby incorporated by reference in its
entirety.
TECHNICAL FIELD
[0002] The disclosure relates to the technical field of wireless
communication, and particularly to a method and device for
transmitting Hybrid Automatic Repeat reQuest (HARQ) information and
a computer storage medium.
BACKGROUND
[0003] Along with the development of wireless communication
technologies, a Licensed-Assisted Access (LAA)-Long Term Evolution
(LTE) system based on the LTE system provides service for a
terminal device based on a Carrier Aggregation (CA) structure by
taking a carrier in a licensed spectrum as a primary carrier and
taking a carrier in an unlicensed spectrum as a secondary carrier.
When a New Radio (NR) system is applied to an unlicensed spectrum,
not only is LAA networking supported, but also Standalone (SA)
networking is supported, so that it is necessary to consider
transmission of a Physical Uplink Control Channel (PUCCH) via the
unlicensed spectrum.
[0004] An NR system includes multiple PUCCH formats, and a PUCCH in
each format occupies multiple symbol lengths, as shown in Table
1.
TABLE-US-00001 TABLE 1 The number of Symbols The number of Bits
PUCCH format occupied by PUCCH carried on PUCCH 0 1-2 .ltoreq.2 1
4-14 .ltoreq.2 2 1-2 >2 3 4-14 >2 4 4-14 >2
[0005] A network device may configure one or more of the PUCCH
formats 0, 1, 2, 3 and 4 for a terminal device. Configuration
information of a PUCCH resource at least includes a position of a
starting symbol for the PUCCH and a symbol number occupied by the
PUCCH. Specifically, for the PUCCH format 0 or 2, the symbol number
corresponding to the PUCCH is 1 or 2; and for the PUCCH format 1, 3
or 4, the symbol number corresponding to the PUCCH is any number
from 4 to 14.
[0006] A network device dynamically indicates a time-domain
position of a PUCCH resource for a terminal device through Downlink
Control Information (DCI). For example, the network device
determines the time-domain position of the PUCCH resource through
Physical Downlink Shared Channel (PDSCH)-HARQ indication
information (PDSCH-HARQ feedback time indication information) in
the DCI. As shown in FIG. 1, it is to be understood that the DCI is
carried on a Physical Downlink Control Channel (PDCCH) shown in
FIG. 1. For example, the network device schedules transmission of a
PDSCH in a time unit #0 through a PDCCH, and the PDCCH indicates
k=5 in feedback time n+k of an uplink feedback PDSCH-HARQ
corresponding to the PDSCH. In FIG. 1, there is made such a
hypothesis that the PDCCH and the PDSCH are in the same time unit.
The terminal device, after receiving the PDSCH in an nth time unit,
feeds back HARQ information corresponding to the PDSCH in an
(n+5)th time unit, namely a PUCCH is transmitted in a time unit #5
in FIG. 1, the PUCCH carries the HARQ information corresponding to
the PDSCH in the time unit #0.
[0007] A terminal device, before transmitting a signal, is required
to detect a channel in an unlicensed spectrum by Clear Channel
Assessment (CCA). The terminal device may transmit a PUCCH when the
channel is idle, otherwise may not transmit the PUCCH. Using fixed
PDSCH-HARQ feedback time may scatter PUCCH resources determined
according to the PDSCH-HARQ feedback time, thereby influencing
uplink scheduling of a network device.
SUMMARY
[0008] For solving the technical problem, embodiments of the
disclosure provide a method and device for transmitting HARQ
information and a computer storage medium.
[0009] A first aspect provides a method for transmitting HARQ
information, which may include the following operations.
[0010] A terminal device determines a first uplink time unit, the
first uplink time unit is used for the terminal device to send
first uplink control information, the first uplink control
information includes first HARQ information, the first HARQ
information includes at least one piece of HARQ information
corresponding to a first downlink shared channel received by the
terminal device, and the first downlink shared channel includes at
least one downlink shared channel.
[0011] The terminal device transmits the first uplink control
information in the first uplink time unit.
[0012] A second aspect provides a device for transmitting Hybrid
Automatic Repeat reQuest (HARQ) information. The device includes a
processor; a memory for storing instructions executable by the
processor; and an input/output interface, herein the processor is
configured to execute the instructions to perform the following
operations: determining a first uplink time unit, the first uplink
time unit is a time unit configured to transmit first uplink
control information, the first uplink control information comprises
first HARQ information, the first HARQ information includes at
least one piece of HARQ information corresponding to a first
downlink shared channel, the first downlink shared channel
comprises at least one downlink shared channel, and the first
downlink shared channel is transmitted through at least one
downlink time unit in a first time duration; and transmitting the
first uplink control information in the first uplink time unit via
the input/output interface.
[0013] A third aspect provides a computer storage medium, which is
configured to store a computer software instruction for executing
the method in the first aspect, including a program designed to
execute the abovementioned aspect.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The drawings described herein are adopted to provide a
further understanding to the disclosure and form a part of the
disclosure. Schematic embodiments of the disclosure and
descriptions thereof are adopted to explain the disclosure and not
intended to form improper limits to the disclosure. In the
drawings:
[0015] FIG. 1 is a time-domain diagram of PDSCH-HARQ feedback.
[0016] FIG. 2 is a first flowchart of a method for transmitting
HARQ information according to an embodiment of the disclosure.
[0017] FIG. 3 is a second flowchart of a method for transmitting a
HARQ information according to an embodiment of the disclosure.
[0018] FIG. 4 is a time-domain diagram of PDSCH-HARQ feedback
according to an embodiment of the disclosure.
[0019] FIG. 5 is a first structure diagram of a device for
transmitting HARQ information according to an embodiment of the
disclosure.
[0020] FIG. 6 is a second structure diagram of a device for
transmitting HARQ information according to an embodiment of the
disclosure.
[0021] FIG. 7 is a structure diagram of a computer device according
to an embodiment of the disclosure.
DETAILED DESCRIPTION
[0022] For making the technical solutions of the embodiments of the
disclosure convenient to understand, related technologies involved
in the embodiments of the disclosure will be described below.
[0023] 1) Unlicensed Spectrum
[0024] Unlicensed spectrums are spectrums divided by countries and
districts and available for radio device communication, and the
spectrums are usually considered as shared spectrums, namely
communication devices in different communication systems may use
the spectrums without applying to the governments for dedicated
spectrum grants when meeting regulatory requirements set by the
countries or the districts for the spectrums. For ensuring friendly
coexistence of each communication system using unlicensed spectrums
for wireless communication in the spectrums, some countries or
districts set regulatory requirements for use of the unlicensed
spectrums. For example, in the Europe, a communication device
follows a Listen Before Talk (LBT) principle, namely the
communication device, before transmitting a signal in a channel of
an unlicensed spectrum, is required to sense the channel at first,
the communication device may transmit the signal only when a
channel sensing result is that the channel is idle, and if the
channel sensing result of the communication device for the channel
of the unlicensed spectrum is that the channel is busy, the
communication device may not transmit the signal. For ensuring
fairness, during a transmission, a time length for signal
transmission of the communication device using the channel of the
unlicensed spectrum may not exceed Maximum Channel Occupation Time
(MCOT). For another example, for avoiding sub-band interference to
a signal transmitted in a channel of an unlicensed spectrum and
improving detection accuracy of a communication device in detecting
the channel of the unlicensed spectrum, the signal transmitted in
the channel of the unlicensed spectrum is required to at least
occupy a certain proportion of a bandwidth of the channel. For
example, for a 5 GHz band, a signal occupies 80% of a bandwidth of
a channel, and for a 60 GHz band, a signal occupies 70% of a
bandwidth of a channel. For another example, for avoiding influence
of a signal transmitted in a channel of an unlicensed spectrum with
excessively high power on transmission of another important signal
such as a radar signal in the channel, a maximum power spectral
density for signal transmission of a communication device using a
channel of an unlicensed spectrum is specified in regulations.
[0025] 2) Network Architecture
[0026] The embodiments of the disclosure may be applied to various
communication systems, for example, a Global System of Mobile
Communication (GSM), a Code Division Multiple Access (CDMA) system,
a Wideband Code Division Multiple Access (WCDMA) system, a General
Packet Radio Service (GPRS), a Universal Mobile Telecommunication
System (UMTS), an LTE system as well as an evolved system of the
LTE system such as an Advanced LTE (LTE-A) system, an NR system as
well as an evolved system of the NR system such as an NR-based
access to Unlicensed spectrum (NR-U) system, or a next-generation
communication system.
[0027] Generally speaking, connections supported by a conventional
communication system are usually limited in number and also easy to
implement. However, along with the development of communication
technologies, a mobile communication system will not only support
conventional communication but also support, for example, Device to
Device (D2D) communication, Machine to Machine (M2M) communication,
Machine Type Communication (MTC) and Vehicle to Vehicle (V2V)
communication.
[0028] A communication system in the embodiments of the disclosure
may be applied to a CA scenario, may also be applied to a Dual
Connectivity (DC) scenario and may further be applied to an SA
networking scenario.
[0029] Each embodiment of the disclosure is described in
combination with a network device and a terminal device.
[0030] The terminal device may also be called User Equipment (UE),
an access terminal, a user unit, a user Station (ST), a mobile
radio ST, a mobile ST, a remote ST, a remote terminal, a mobile
device, a user terminal, a terminal, a wireless communication
device, a user agent or a user device. The terminal device may be
an ST in a Wireless Local Area Network (WLAN), and may be a cell
phone, a cordless phone, a Session Initiation Protocol (SIP) phone,
a Wireless Local Loop (WLL) ST, a Personal Digital Assistant (PDA),
a handheld device with a wireless communication function, a
computing device, another processing device connected to a wireless
modem, a vehicle device, a wearable device, a terminal device in a
next-generation communication system, for example, a future
fifth-Generation (5G) network, a terminal device in a future
evolved Public Land Mobile Network (PLMN) or the like.
[0031] Exemplarily but unlimitedly, in the embodiments of the
disclosure, the terminal device may also be a wearable device. The
wearable device may also be called a wearable intelligent device
and is a generic term of wearable devices obtained by performing
intelligentization designing and development on daily wearing
products, for example, glasses, gloves, watches, clothes and shoes.
The wearable device is a portable device directly worn or
integrated to clothes or accessory of a user. The wearable device
not only is a hardware device but also realizes powerful functions
through software support, data interaction and cloud interaction.
Generalized wearable intelligent device includes, for example,
intelligent watches or intelligent glasses with complete functions
and large sizes and capable of realizing all or part of functions
independently of intelligent phones, and for example, various types
of intelligent bands and intelligent jewelries of which each is
dedicated to application functions of a certain type and required
to be matched with other devices such as intelligent phones for
use.
[0032] The network device may be a device configured to communicate
with a mobile device, and the network device may be an Access Point
(AP) in the WLAN, a Base Transceiver Station (BTS) in the GSM or
CDMA, may also be a NodeB (NB) in WCDMA, and may further be an
Evolutional Node B (eNB or eNodeB) in LTE, or a relay station or
AP, or a vehicle device, a wearable device, a network device in an
NR network, a network device in the future evolved PLMN or the
like.
[0033] In the embodiments of the disclosure, the network device
provides service for a cell, and the terminal device communicates
with the network device through a transmission resource (for
example, a frequency-domain resource or a spectrum resource) for
the cell. The cell may be a cell corresponding to the network
device (for example, a base station), and the cell may belong to a
macro base station and may also be a base station corresponding to
a small cell. Here, the small cell may include: a metro cell, a
micro cell, a pico cell, a femto cell and the like. These small
cells have the characteristics of small coverage and low
transmitted power and are applied to provision of high-rate data
transmission service.
[0034] In the embodiments of the disclosure, multiple cells may
simultaneously work on the same frequency in a carrier in an LTE
system or an NR system, and in some special scenarios, concepts of
carrier and cell may also be considered to be equivalent. For
example, in a CA scenario, when a secondary carrier is configured
for UE, both a carrier index of the secondary carrier and a cell
Identity (ID) of a secondary cell working in the secondary carrier
may be contained, and under this condition, the concepts of carrier
and cell may be considered to be equivalent. For example, for the
UE, access to a carrier and access to a cell are equivalent.
[0035] It is to be noted that a PUCCH in the embodiments of the
disclosure may be a PUCCH in an LTE system, may also be a PUCCH in
an NR system and may also be an uplink control channel in another
system. There are no limits made thereto in the disclosure.
[0036] In the embodiments of the disclosure, uplink control
information may include at least one of HARQ information,
Channel-State Information (CSI), Schedule Request (SR) information
and other control information transmitted by UE. The CSI includes
at least one of Rank Indicator (RI) information, Precoding Matrix
Indicator (PMI) information and Channel Quality Indicator (CQI)
information.
[0037] In the embodiments of the disclosure, the uplink control
information may be transmitted through the PUCCH and may also be
transmitted through a Physical Uplink Shared Channel (PUSCH). There
are no limits made thereto in the disclosure.
[0038] Optionally, in the embodiments of the disclosure, a downlink
transmission opportunity may be defined as one or more continuous
time units configured to transmit downlink information, and
similarly, an uplink transmission opportunity may be defined as one
or more continuous time units configured to transmit uplink
information.
[0039] In the embodiments of the disclosure, a time unit may be
defined as one or more subframes, may also be defined as one or
more slots and may also be defined as one or more mini-slots or
symbols, etc. A starting time unit and/or last time unit of a
downlink transmission opportunity or an uplink transmission
opportunity may be a complete time unit and may also be part of a
time unit, etc. There are no limits made thereto in the embodiment
of the disclosure.
[0040] Optionally, a time unit in the disclosure may refer to a
complete time unit and may also refer to an incomplete time unit.
For example, an uplink time unit may refer to that all symbols in
the time unit are configured for uplink transmission and may also
refer to that part of the symbols in the time unit are configured
for uplink transmission. There are no limits made thereto in the
disclosure.
[0041] According to the technical solutions of the embodiments of
the disclosure, flexible PDSCH-HARQ feedback time (or called a time
sequence) is introduced into an NR-U system, thereby ensuring a
delay and performance of the whole communication link.
[0042] FIG. 2 is a first flowchart of a method for transmitting
HARQ information according to an embodiment of the disclosure. As
shown in FIG. 2, the method for transmitting HARQ information in
the embodiment of the disclosure includes the following steps.
[0043] In 201, a terminal device determines a first uplink time
unit, the first uplink time unit is used for the terminal device to
transmit first uplink control information, the first uplink control
information includes first HARQ information, the first HARQ
information includes at least one piece of HARQ information
corresponding to a first downlink shared channel received by the
terminal device and the first downlink shared channel includes at
least one downlink shared channel.
[0044] Optionally, the first downlink shared channel is transmitted
through at least one downlink time unit in a first time
duration.
[0045] In the embodiment of the application, the first uplink
control information includes the at least one piece of HARQ
information corresponding to the at least one downlink shared
channel demodulated in the first time duration (i.e., one or more
fixed time units). Herein, the first time duration includes the
downlink time unit, but whether the first time duration includes an
uplink time unit or not is not limited, namely the first time
duration may include the uplink time unit and may also not include
the uplink time unit.
[0046] For example, the first time duration includes M downlink
time units, the M downlink time units are configured to transmit
the first downlink shared channel, for example, N downlink shared
channels (optionally, N is a positive integer less than or equal to
M), and the first uplink control information transmitted by the
terminal device in the first uplink time unit includes HARQ
information corresponding to the N downlink shared channels.
[0047] Optionally, the terminal device receives first information
transmitted by a network device, the first information indicates a
time-domain position of the first uplink time unit.
[0048] In 202, the terminal device transmits the first uplink
control information in the first uplink time unit.
[0049] In the embodiment of the application, a position
relationship between the first time duration and the first uplink
time unit may be determined in at least one of the following
manners.
[0050] 1) A last downlink time unit in the first time duration is a
first downlink time unit, and a time interval between the first
downlink time unit and the first uplink time unit is more than or
equal to a first value.
[0051] Optionally, the first value is specified by a communication
system; or,
[0052] the first value is indicated by the network device through
physical-layer signaling; or,
[0053] the first value is configured by the network device through
higher-layer signaling.
[0054] Optionally, the first value is determined according to a
HARQ processing capability of the terminal device.
[0055] Optionally, the first value is determined according to a
priority of a service transmitted in the first downlink shared
channel.
[0056] 2) A starting downlink time unit in the first time duration
is a second downlink time unit, and a time interval between the
second downlink time unit and the first uplink time unit is less
than or equal to a second value.
[0057] Optionally, the second value is specified by the
communication system; or,
[0058] the second value is indicated by the network device through
the physical-layer signaling; or,
[0059] the second value is configured by the network device through
the higher-layer signaling.
[0060] Optionally, the second value is greater than the first
value.
[0061] In the embodiment of the application, a unit of the time
interval may be time unit, and a unit of the value may also be time
unit. For example, for definition of the time interval, a time
interval between a time unit #2 and a time unit #3 is a time unit,
and a time interval between a time unit #5 and a time unit #8 is
three time units. For example, for definition of the value, if the
first value is three time units, the second value is five time
units and the time unit configured to transmit the first uplink
control information is the time unit #8, HARQ information
corresponding to downlink shared channels transmitted in the time
unit #3, a time unit #4 and the time unit 35 is fed back in the
time unit #8.
[0062] In an implementation mode, the terminal device transmits the
first uplink control information in a second uplink time unit, the
second uplink time unit is later than the first uplink time
unit.
[0063] Herein, the first uplink control information may be
repeatedly transmitted in multiple uplink time units. If the
transmission of the first uplink control information in the first
uplink time unit fails, the first uplink control information is
repeatedly transmitted in the second uplink time unit after the
first uplink time unit, to increase a transmitting probability of
the first uplink control information.
[0064] Optionally, the terminal device determines a time-domain
position of the second uplink time unit according to indication
information received from the network device. For example, the
first information also indicates the time-domain position of the
second uplink time unit.
[0065] In the embodiment of the application, the first uplink
control information includes the at least one piece of HARQ
information for the at least one downlink shared channel in the
first time duration (i.e., a fixed time unit), and similarly, the
second uplink control information may include at least one piece of
HARQ information for at least one downlink shared channel in a
second time duration.
[0066] In such case, the terminal device determines a third uplink
time unit, the third uplink time unit is used for the terminal
device to transmit the second uplink control information, the
second uplink control information includes second HARQ information,
the second HARQ information is the at least one piece of HARQ
information corresponding to a second downlink shared channel
received by the terminal device, the second downlink shared channel
includes at least one downlink shared channel and the second
downlink shared channel is transmitted on at least one downlink
time unit in the second time duration; and the terminal device
transmits the second uplink control information in the third uplink
time unit.
[0067] Optionally, the terminal device receives second information
transmitted by the network device, the second information indicates
a time-domain position of the third uplink time unit.
[0068] Optionally, the second time duration is later than the first
time duration, and there is no downlink time unit between the first
time duration and the second time duration.
[0069] Optionally, the second time duration is later than the first
time duration, and the first time duration and the second time
duration include the same third downlink time unit, the third
downlink time unit includes at least one downlink time unit.
Furthermore, the first uplink control information further includes
third HARQ information, and/or, the second uplink control
information further includes the third HARQ information, the third
HARQ information includes at least one piece of HARQ information
corresponding to at least one downlink shared channel transmitted
in the third downlink time unit. That is, the third HARQ
information is transmitted in the first uplink time unit, or, the
third HARQ information is transmitted in the third uplink time
unit, or, the third HARA information may be transmitted in the
first uplink time unit and the third uplink time unit.
[0070] FIG. 4 is a time-domain diagram of PDSCH-HARQ feedback
according to an embodiment of the disclosure. Referring to FIG. 4,
time units are cyclically numbered to be #0 to #9, and a downlink
transmission in an unlicensed spectrum includes seven time units. A
time unit where a PDSCH is located includes the time unit #7, the
time unit #8, the time unit #9, the time unit #0, the time unit #1,
the time unit #2, part of the time unit #3. In addition, a starting
PUCCH (i.e., first PUCCH) resource is in the time unit #6, and a
next PUCCH (i.e., third PUCCH) resource is after the starting PUCCH
resource. In the embodiment of the application, a HARQ that should
be fed back in the time unit may be determined according to the
time unit where the PUCCH is located. For example, there is a PUCCH
resource in a time unit n1 (i.e., a first uplink time unit), and
the PUCCH resource is configured to transmit HARQs to be fed back
corresponding to a PDSCH in time units before a time unit n1-k1
(including the time unit n1-k1) and/or after a time unit n1-k2
(including the time unit n1-k2), n1 represents a time unit where
the PUCCH is located, k1 is a first value and k2 is a second
value.
[0071] Optionally, a network device schedules transmission of a
PUCCH in a downlink time unit (for example, the time unit #3 in
FIG. 4) through a PDCCH, the PDCCH indicates that a time unit
corresponding to n2+m is a time-domain position of the PUCCH, n2
representing a time unit where the PDCCH is located and m being a
third value.
[0072] Optionally, for one UE, a downlink transmission time unit
corresponding to a PUCCH resource is fixed, namely HARQ information
size transmitted in a PUCCH resource is fixed.
[0073] FIG. 4 schematically shows that HARQ information
corresponding to a PDSCH demodulated in a first time duration
should be fed back in the first PUCCH resource. As shown in FIG. 4,
for the first PUCCH resource in the time unit #6 (i.e., the first
uplink time unit), k1=6, and k2=9. The first time duration includes
the time units #7, #8, #9 and #0. Correspondingly, HARQ information
corresponding to the PDSCH transmitted in the time units #7, #8, #9
and #0 may be transmitted to the network device through the first
PUCCH resource, namely the HARQ information size (i.e., first
uplink control information) transmitted in the first PUCCH resource
is fixed.
[0074] Optionally, if the UE fails in transmission on the first
PUCCH resource, for example, the UE fails in channel detection
before the first PUCCH resource, the UE may transmit the HARQ
information in the third PUCCH resource. The third PUCCH resource
is a PUCCH resource after the first PUCCH resource, and a PUCCH
format corresponding to the third PUCCH resource may be the same as
or different from a format corresponding to the first PUCCH
resource.
[0075] FIG. 4 also schematically shows that HARQ information
corresponding to a PDSCH demodulated in a second time duration
should be fed back in the first PUCCH resource. As shown in FIG. 4,
for a second PUCCH resource in the time unit #9 (i.e., a third
uplink time unit), k1=4, and k2=8. The second time duration
includes the time units #1, #2, #3, #4 and #5, the time units #4
and #5 are uplink time units. Correspondingly, HARQ information
corresponding to the PDSCH transmitted in the time units #1, #2 and
#3 may be transmitted to the network device through the second
PUCCH resource, namely the HARQ information size (i.e., second
uplink control information) transmitted in the second PUCCH
resource is also fixed.
[0076] Optionally, if the UE fails in transmission on the second
PUCCH resource, for example, the UE fails in channel detection
before the second PUCCH resource, the UE may transmit the
information in a fourth PUCCH resource. The fourth PUCCH resource
is a PUCCH resource after the second PUCCH resource, and a PUCCH
format corresponding to the fourth PUCCH resource may be the same
as or different from a format corresponding to the second PUCCH
resource.
[0077] With adoption of the technical solution of the embodiment of
the disclosure, when uplink control information is fed back in an
unlicensed carrier, one or more downlink time units corresponding
to a PUCCH are determined based on a time unit where the PUCCH is
located, thereby feeding back, in the PUCCH, HARQ information
corresponding to a PDSCH transmitted in the one or more downlink
time units. By such a flexible HARQ feedback method, the network
device may flexibly and effectively allocate uplink and downlink
resources in an unlicensed spectrum under the condition of ensuring
a delay and performance of the whole communication link.
[0078] FIG. 3 is a second flowchart of a method for transmitting
HARQ information according to an embodiment of the disclosure. As
shown in FIG. 3, the method for transmitting the HARQ information
in the embodiment of the disclosure includes the following
steps.
[0079] In 301, a network device transmits first information to a
terminal device, the first information indicates a first uplink
time unit used for the terminal device to transmit first uplink
control information, the first uplink control information includes
first HARQ information, the first HARQ information includes at
least one piece of HARQ information corresponding to a first
downlink shared channel received by the terminal device and the
first downlink shared channel includes at least one downlink shared
channel.
[0080] In 302, the network device receives the first uplink control
information in the first uplink time unit.
[0081] Optionally, the first downlink shared channel is transmitted
through at least one downlink time unit in a first time
duration.
[0082] In an implementation mode, a last downlink time unit in the
first time duration is a first downlink time unit, and a time
interval between the first downlink time unit and the first uplink
time unit is more than or equal to a first value.
[0083] In an implementation mode, the first value is specified by a
communication system; or,
[0084] the first value is indicated by the network device through
physical-layer signaling; or,
[0085] the first value is configured by the network device through
higher-layer signaling.
[0086] In an implementation mode, a starting downlink time unit in
the first time duration is a second downlink time unit, and a time
interval between the second downlink time unit and the first uplink
time unit is less than or equal to a second value.
[0087] In an implementation mode, the second value is specified by
the communication system; or,
[0088] the second value is indicated by the network device through
the physical-layer signaling; or,
[0089] the second value is configured by the network device through
the higher-layer signaling.
[0090] In an implementation mode, the method further includes the
following operation.
[0091] The network device receives the first uplink control
information in a second uplink time unit, the second uplink time
unit is later than the first uplink time unit.
[0092] In an implementation mode, the method further includes the
following operations.
[0093] The network device transmits second information to the
terminal device, the second information indicates a third uplink
time unit used for the terminal device to transmit second uplink
control information, the second uplink control information includes
second HARQ information, the second HARQ information includes at
least one piece of HARQ information corresponding to a second
downlink shared channel received by the terminal device, the second
downlink shared channel includes at least one downlink shared
channel, and the second downlink shared channel is transmitted in
at least one downlink time unit in a second time duration.
[0094] The network device receives the second uplink control
information in the third uplink time unit.
[0095] In an implementation mode, the second time duration is later
than the first time duration, and there is no downlink time unit
between the first time duration and the second time duration.
[0096] In an implementation mode, the second time duration is later
than the first time duration, and each of the first time duration
and the second time duration includes the same third downlink time
unit, the third downlink time unit includes at least one downlink
time unit.
[0097] In an implementation mode, the first uplink control
information further includes third HARQ information, and/or, the
second uplink control information further includes the third HARQ
information, the third HARQ information being at least one piece of
HARQ information corresponding to at least one downlink shared
channel transmitted in the third downlink time unit.
[0098] Those skilled in the art should know that the embodiment of
the disclosure for a network device side may be understood with
reference to the embodiment for a terminal device side and an
information feedback method for the network device side and an
information feedback method for the terminal device have
corresponding flows and effects.
[0099] FIG. 5 is a first structure diagram of a device for
transmitting HARQ information according to an embodiment of the
disclosure. As shown in FIG. 5, the device for transmitting HARQ
information in the embodiment of the disclosure includes a
determination unit 501 and a first transmission unit 502.
[0100] The determination unit 501 is configured to determine a
first uplink time unit, the first uplink time unit is used for a
terminal device to transmit first uplink control information, the
first uplink control information includes first HARQ information,
the first HARQ information includes at least one piece of HARQ
information corresponding to a first downlink shared channel
received by the terminal device, and the first downlink shared
channel includes at least one downlink shared channel.
[0101] The first transmission unit 502 is configured to transmit
the first uplink control information in the first uplink time
unit.
[0102] Optionally, the first downlink shared channel is transmitted
through at least one downlink time unit in a first time
duration.
[0103] In an implementation mode, a last downlink time unit in the
first time duration is a first downlink time unit, and a time
interval between the first downlink time unit and the first uplink
time unit is more than or equal to a first value.
[0104] In an implementation mode, the first value is specified by a
communication system; or,
[0105] the first value is indicated by a network device through
physical-layer signaling; or,
[0106] the first value is configured by the network device through
higher-layer signaling.
[0107] In an implementation mode, a starting downlink time unit in
the first time duration is a second downlink time unit, and a time
interval between the second downlink time unit and the first uplink
time unit is less than or equal to a second value.
[0108] In an implementation mode, the second value is specified by
the communication system; or,
[0109] the second value is indicated by the network device through
the physical-layer signaling; or,
[0110] the second value is configured by the network device through
the higher-layer signaling.
[0111] In an implementation mode, the device further includes a
second transmission unit 503.
[0112] The second transmission unit 503 is configured to transmit
the first uplink control information in a second uplink time unit,
the second uplink time unit being later than the first uplink time
unit.
[0113] In an implementation mode, the determination unit 501 is
further configured to determine a third uplink time unit, the third
uplink time unit is used for the terminal device to transmit second
uplink control information, the second uplink control information
includes second HARQ information, the second HARQ information
includes at least one piece of HARQ information corresponding to a
second downlink shared channel received by the terminal device, the
second downlink shared channel includes at least one downlink
shared channel, and the second downlink shared channel is
transmitted on at least one downlink time unit in a second time
duration.
[0114] The device further includes a third transmission unit 504,
configured to transmit the second uplink control information in the
third uplink time unit.
[0115] In an implementation mode, the second time duration is later
than the first time duration, and there is no downlink time unit
between the first time duration and the second time duration.
[0116] In an implementation mode, the second time duration is later
than the first time duration, and each of the first time duration
and the second time duration includes the same third downlink time
unit, the third downlink time unit includes at least one downlink
time unit.
[0117] In an implementation mode, the first uplink control
information further includes third HARQ information, and/or, the
second uplink control information further includes the third HARQ
information, the third HARQ information includes at least one piece
of HARQ information corresponding to at least one downlink shared
channel transmitted in the third downlink time unit.
[0118] Those skilled in the art should know that functions realized
by each unit in the device for transmitting HARQ information shown
in FIG. 5 may be understood with reference to related descriptions
about the method for transmitting HARQ information. The functions
of each unit in the device for transmitting HARQ information shown
in FIG. 5 may be realized through a program running in a processor,
and may also be realized through a specific logical circuit. It is
also to be understood that the first transmission unit 502, second
transmission unit 503 and third transmission unit 504 shown in FIG.
5 may be the same transmission unit and may also be different
transmission units and there are no limits made in the
disclosure.
[0119] FIG. 6 is a second structure diagram of a device for
transmitting HARQ information according to an embodiment of the
disclosure. As shown in FIG. 6, the device for transmitting HARQ
information in the embodiment of the disclosure includes a
transmission unit 601 and a first receiving unit 602.
[0120] The transmission unit 601 is configured to transmit first
information to a terminal device, the first information indicates a
first uplink time unit used for the terminal device to transmit
first uplink control information, the first uplink control
information includes first HARQ information, the first HARQ
information includes at least one piece of HARQ information
corresponding to a first downlink shared channel received by the
terminal device, and the first downlink shared channel includes at
least one downlink shared channel.
[0121] The first receiving unit 602 is configured to receive the
first uplink control information in the first uplink time unit.
[0122] Optionally, the first downlink shared channel is transmitted
through at least one downlink time unit in a first time
duration.
[0123] In an implementation mode, a last downlink time unit in the
first time duration is a first downlink time unit, and a time
interval between the first downlink time unit and the first uplink
time unit is more than or equal to a first value.
[0124] In an implementation mode, the first value is specified by a
communication system; or,
[0125] the first value is indicated by a network device through
physical-layer signaling; or,
[0126] the first value is configured by the network device through
higher-layer signaling.
[0127] In an implementation mode, a starting downlink time unit in
the first time duration is a second downlink time unit, and a time
interval between the second downlink time unit and the first uplink
time unit is less than or equal to a second value.
[0128] In an implementation mode, the second value is specified by
the communication system; or,
[0129] the second value is indicated by the network device through
the physical-layer signaling; or,
[0130] the second value is configured by the network device through
the higher-layer signaling.
[0131] In an implementation mode, the device further includes a
second receiving unit 603.
[0132] The second receiving unit 603 is configured to receive the
first uplink control information in a second uplink time unit, the
second uplink time unit is later than the first uplink time
unit.
[0133] In an implementation mode, the transmission unit 601 is
further configured to transmit second information to the terminal
device, the second information indicates a third uplink time unit
used for the terminal device to transmit second uplink control
information, the second uplink control information includes second
HARQ information, the second HARQ information includes at least one
piece of HARQ information corresponding to a second downlink shared
channel received by the terminal device, the second downlink shared
channel includes at least one downlink shared channel, and the
second downlink shared channel is transmitted in at least one
downlink time unit in a second time duration.
[0134] The device further includes a third receiving unit 604.
[0135] The third receiving unit 604 is configured to receive the
second uplink control information in the third uplink time
unit.
[0136] In an implementation mode, the second time duration is later
than the first time duration, and there is no downlink time unit
between the first time duration and the second time duration.
[0137] In an implementation mode, the second time duration is later
than the first time duration, and each of the first time duration
and the second time duration includes the same third downlink time
unit, the third downlink time unit includes at least one downlink
time unit.
[0138] In an implementation mode, the first uplink control
information further includes third HARQ information, and/or, the
second uplink control information further includes the third HARQ
information, the third HARQ information includes at least one piece
of HARQ information corresponding to at least one downlink shared
channel transmitted in the third downlink time unit.
[0139] Those skilled in the art should know that functions realized
by each unit in the device for transmitting HARQ information shown
in FIG. 6 may be understood with reference to related descriptions
about the method for transmitting HARQ information. The functions
of each unit in the device for transmitting HARQ information shown
in FIG. 6 may be realized through a program running in a processor,
and may also be realized through a specific logical circuit. It is
also to be understood that the first receiving unit 602, second
receiving unit 603 and third receiving unit 604 shown in FIG. 6 may
be the same receiving unit and may also be different receiving
units and there are no limits made in the disclosure.
[0140] When being implemented in form of software functional module
and sold or used as an independent product, the device for
transmitting HARQ information of the embodiments of the disclosure
may also be stored in a computer-readable storage medium. Based on
such an understanding, the technical solutions of the embodiments
of the disclosure substantially or parts making contributions to
the conventional art may be embodied in form of software product,
and the computer software product is stored in a storage medium,
including a plurality of instructions configured to enable a
computer device (which may be a personal computer, a server, a
network device or the like) to execute all or part of the method in
each embodiment of the disclosure. The storage medium includes:
various media capable of storing program codes such as a U disk, a
mobile hard disk, a Read Only Memory (ROM), a magnetic disk or an
optical disk. Therefore, the embodiments of the disclosure are not
limited to any specific hardware and software combination.
[0141] Correspondingly, the embodiments of the disclosure also
provide a computer storage medium, in which a computer-executable
instruction is stored, the computer-executable instruction is
executed by a processor to implement the method for transmitting
HARQ information of the embodiments of the disclosure.
[0142] FIG. 7 is a structure diagram of a computer device according
to an embodiment of the disclosure. The computer device may be a
terminal device and may also be a network device. As shown in FIG.
7, the computer device 100 may include one or more (only one is
illustrated in the figure) processors 1002 (the processor 1002 may
include, but not limited to, a processing device such as a Micro
Control Unit (MCU) or a Field Programmable Gate Array (FPGA)), a
memory 1004 configured to store data and a transmission device 1006
configured for a communication function. Those of ordinary skill in
the art should know that the structure shown in FIG. 7 is only
schematic and not intended to limit the structure of the electronic
device. For example, the computer device 100 may further include
components more or fewer than the components shown in FIG. 7 or has
a configuration different from that shown in FIG. 7.
[0143] The memory 1004 may be configured to store a software
program of application software and a module, for example, a
program instruction/module corresponding to a method in the
embodiments of the disclosure. The processor 1002 runs the software
program and module stored in the memory 1004, thereby executing
various functional applications and data processing, namely
implementing the abovementioned method. The memory 1004 may include
a high-speed random access memory and may also include a
nonvolatile memory, for example, one or more magnetic storage
devices, flash memories or other nonvolatile solid-state memories.
In some examples, the memory 1004 may further include a memory
arranged remotely relative to the processor 1002 and the remote
memory may be connected to the computer device 100 through a
network. An example of the network includes, but not limited to,
the Internet, an intranet, a local area network, a mobile
communication network and a combination thereof.
[0144] The transmission device 1006 is configured to receive or
transmit data through a network. A specific example of the network
may include a wireless network provided by a communication provider
of the computer device 100. In an example, the transmission device
1006 includes a Network Interface Controller (NIC), which may be
connected with another network device through a base station,
thereby communicating with the Internet. In an example, the
transmission device 1006 may be a Radio Frequency (RF) module,
configured to communicate with the Internet in a wireless
manner.
[0145] In the technical solutions of the embodiments of the
disclosure, the terminal device determines the first uplink time
unit, the first uplink time unit is used for the terminal device to
transmit the first uplink control information, the first uplink
control information includes the first HARQ information, the first
HARQ information is the at least one piece of HARQ information
corresponding to the first downlink shared channel received by the
terminal device, the first downlink shared channel includes the at
least one downlink shared channel and the first downlink shared
channel being transmitted in the at least one downlink time unit in
the first time duration; and the terminal device transmits the
first uplink control information in the first uplink time unit.
With adoption of the technical solutions of the embodiments of the
disclosure, when uplink control information is fed back in an
unlicensed carrier, one or more downlink time units corresponding
to a PUCCH are determined based on a time unit where the PUCCH is
located, thereby feeding back HARQ information corresponding to a
PDSCH transmitted in the one or more downlink time units in the
PUCCH. By such a flexible HARQ feedback method, the network device
may flexibly and effectively allocate uplink and downlink resources
in an unlicensed spectrum under the condition of ensuring a delay
and performance of the whole communication link.
[0146] The technical solutions recorded in the embodiments of the
disclosure may be freely combined without conflicts.
[0147] In some embodiments provided by the disclosure, it is to be
understood that the disclosed method and intelligent device may be
implemented in another manner. The device embodiment described
above is only schematic, and for example, division of the units is
only logic function division, and other division manners may be
adopted during practical implementation. For example, multiple
units or components may be combined or integrated into another
system, or some characteristics may be neglected or not executed.
In addition, coupling or direct coupling or communication
connection between each displayed or discussed component may be
indirect coupling or communication connection, implemented through
some interfaces, of the device or the units, and may be electrical
and mechanical or adopt other forms.
[0148] The units described as separate parts may or may not be
physically separated, and parts displayed as units may or may not
be physical units, and namely may be located in the same place, or
may also be distributed to multiple network units. Part of all of
the units may be selected according to a practical requirement to
achieve the purposes of the solutions of the embodiments.
[0149] In addition, each functional unit in each embodiment of the
disclosure may be integrated into a second processing unit, each
unit may also serve as an independent unit and two or more than two
units may also be integrated into a unit. The integrated unit may
be implemented in a hardware form and may also be implemented in
form of hardware and software functional unit.
[0150] The above is only the specific implementation mode of the
disclosure and not intended to limit the scope of protection of the
disclosure. Any variations or replacements apparent to those
skilled in the art within the technical scope disclosed by the
disclosure shall fall within the scope of protection of the
disclosure.
* * * * *